Log-barking machine



M F. HIMMELSBACH ET AL 71,791,242

Feb. 3, 1931.

' LOG BARKING MACHINE Filed Sept. 13,}926 'ssneets-sheet 1 F.HIMMELSBACH ETAL v 91,242

LOG BARKING MACHINE Filed P 1926 '55 Sheets-Sheet 2 firm mi FmnzHimmelsbach,

Hermann Tormin b ZZezkvAfTOR/WK Feb. 3, 1931; F.'HIMMELSBACH ETAL LOGBARKING'MACHINE 3 Sheets-Sheet 3 Filed Sept. 13, 19,26

Patented Feb. 3,' 1931 uurrsoi STATES- PATENT OFFICE rmz nmimnsnnon' minnnnmmn TOBMIN, or ranmuae, m namm, GERMANY,

ASSIGNORS, BY MESNE ASSIGNMENTS,

HOLZVEBWEBTUNG AIK'IIEIQNGES ELLSC HAFT, F CHABLOTTENBUBG, Gm, A.

JOINT-STOCK comm LOG-EARRING MACHINE Application nled l eptember 18,1926, Serial 110. 185,183, and in Germany Italy 23,

, cutter-head or cutter wheel is, apart from its only movable in onedirection, and

adequately to accomlarities of the logs.

rotation, consequently is unable modate itself to irre Ithas' also beendi cult or impracticable 1o quickly. to adjust-the cutter, in the courseof the work, for different depths of cut.

According to our invention the defect of p inadequate accommodation ofthe cutter head to the log is removed'by arranging that the '15 cutterhead is rotatably mounted on a pivoted arm orbeam, so that it is notonly movable to andfrom the axis of the log, by rocking the arm, but isalso capable of a rocking movement about an axis extending transtoversely of the axis of rotation of the arm.

This transverse axis is preferably approximately tangential to the .logcircumference. at the art where the-cutter is operating. The roc ingmovement or wabble about the saidtransverse axis is preferably impartedby means oftwofeelers resting on the log at opposite sides of the cutterhead, one of these feelers being vertically adjustable for regulatingthe tilt which is 'ven to the cutter D head for the purpose of logwithout producing ridges, which are unsightly and at which the wood isliable to splinter. .For regulating the depth of cut the cutter head isadjustable in its carrier without interfering withthe adjustment of thesaid feelers.

The lengthwise movement of the log under the cutter head produces alateral thrust on the cutter head, its point of support is a substantialdistance above the log, but if, as above indicated, the cutter head iscarried by a pivot whose axis is level or nearly level .with the cuttingplane there is no effective leverage for such twisting.

In the annexed drawings Fig. 1 is a diagrammatic side elevation of thebarking machine. Fig. 2 a plan view thereof.

arking a tapering q whlch tends to twlst If ihto immediate contact atits lower surface Fig. 3 a section through the machine head on anenlarged scale.

h Fig. 4 a front elevation of the machine Fig. 5 aplan view of thehand-wheel for alteratlon of the shaving thickness.

Fi 6 is a side view of the upwardly ad- I justa le feeler ortouch-rocker.

1 1s a rockin beam pivoted on a horizontal axle 1 carrie by a pillar 1".The'shorter arm of the beam 1 carries a motor 42 for a urposehereinafter referred to, and at the end of the longer arm of the beam 1is a socket 2.

The machine-head 3 is pivoted in the socket 2by means of a bolt 4parallel with the arm 1 and is held in the normal erect position by twodraw-sprin s 5 see Fi 2) or the like. In-the outer en of t e macine-head 3 (see Flg. 3) is a vertical bearing for the hollow -'1OIKPREVA HOLZIMPRAGNIERUNG UND shaft 6 which is adjustable in thedirection ing. The easy loosening of the connection between cutter-headand hollow shaft 6 reuired for a quick exchange of the head 8 isobtained in two ways: first b arrangement of a clutch cou ling 9 (Fi 3between cutby a screw 10, passing through a cap 11 and screwed into theend of the stem 7 by means of the milled head 12.

The machine head 3 carries the two touchrockers 26 and 27 (see Figs. 4and6). These revent the cutter-head 8 itself from coming with the log 29revolved underneath the cutter head by the two rotatory wheels 28. Oneof these two touch-rockers is adjustable up wardly. The upward movementcan be effected by movin the lower part 30 of the touch-rocker 27 a ongan oblique lane on the upper part of the touch-rocker Fsee Fig. 6) bymeans of an adjusting-screw 31. For readingoff direct the difference inheight of the touch-rocker the-upper part thereof is 'ter-head 8 andollow sha t 6, and secondly is secured to the lower part of during theworking of the m provided with a scale 32. A rod 33 (Fig. 6) each of'thetouch-rockers 26 and 27 by means of the eye bolts 34 and nuts 35, bywhich the rod 33 is pressed to the lower side of the rocker (Fig. 6) andprevented from rotating automatically. After the portion of thesliding'surface of the rod lying on the trunk'becomes worn, the nuts 35can be loosened and the rod 33 can be turned on its longitudinal axisuntil which a screw-sleeve 38 provided with a handwheel 37. can be movedup and down. Through this movement the ball-bearing sleeve in two parts39 39 surroundin the hollow shaft 6 is carried along and with t thekeyed-on belt pulley 40 to ether with the hollow shaft 6 and the stem ofthe cutter head 8. The belt pulley 40 receives its motion by means ofthe belt 41 from the motor 42 (Fig. 1) fastened on the pendulous arm 1.In order thatthe cutter-head ma not of itself move upwards during thewor ng, a catchrin 4.3 is provided inside the screw-sleeve 38 see Fig.5), into which one or two bolts are forced by a spring 45: The spring 451s secured to a knob 46 on the upper part of the ball-bearing sleeve 39,whichdoes not rotate with the cutter head.

between said cutter an For protection of the operator from con-- tactwith the milled head 12 (Fig. 3) rotat ing at many thousands ofrevolutions, a hood: guard 47 is provided on the normally stationaryhand-wheel 37 which effects the set-- ting of the depth of cut. On themachine- 'head 3 (Fig. 3) there is also the scale indicator 48, fromwhich by means of graduated divisions provided on the hand-wheel 37 thedesired depth of out can be immediately secured during the operation ofthe cutterhead. 7

What we claim as our invention and desire to secure by Letters. Patentof the United States is I 1; In a log barking machine the combination ofan arm, a machine head carried by said arm, a cutter head carried bysaid ma-' chine head, means for rotating the cutter head about its'axis,means for axial adjust.

ment of the cutter head, the said cutter head comprising a hollow-shaftand the cutter having a stemfor enterin said shaft, a clutch the shaftend and ascrew for securing the cutter stem in'said shaft. i

2. In a log barking machine the combinaend to end, a.

3 (Fig. 3) is menace tion of an arm, a machine head carried by said arm,a cutter head carried by said machine head, means for rotating thecutter head about its axis, touch rockers carried by said arm one oneach side of said cutter head, means for vertical adjustment of one ofsaid rockers, means for axial adjustment of the cutter headindependently I of said rockers, the said cutter head comprising ahollow shaft and the cutter having a stem for entering said shaft, aclutch between said cutter and the shaft end and a screw for securingthe cutter head stem in said shaft.

3. In a log barking machine the combination of an arm, a machine headcarried by said arm, a cutter head carried by said machine head, meansfor rotating the cutter head about its axis, touch rockers carried bysaid arm and means for axial adjustment of the cutter head independentlyof said rockers, said means comprising a screw thread and machine headand abearing for the cutter head-having a screw thread the aforesaidscrew thread.

4. In a log barking machine the combination of an arm, a machine headcarried by said arm, a cutter'head carried by said machine head, meansfor rotating, the cutter head about its axis, touch rockers carried bysaid arm and means for axial adjustment of the cutter head independentlyof said rockers, said means comprising a screw thread and 'machine headand a bearing for the cutter cooperating withhead having a screw threadcooperating with the aforesaid screw thread, together with a hand wheelfor rotating the cutter head bearing. 7

'5. In a logbarking machine the combination of an arm, a machine headcarried by said arm, a cutter head carried by said machine head, meansfor rotating the cutter head about its axis, touch rockers carried bysaid arm one on each side of said cutter head, means for verticaladjustment of'one of said rockers, means for axial adjustment of thecutter head independently of said rockers,

. the said cutter head comprising a hollow shaft.

and the cutter having a stem for entering said shaft, a clutch betweensaid cutter and the shaft end-and a screw for'securing the cutter headstem in said shaft,--the said adjustin means comprising a hand wheel,and a hoo carried by said hand wheel for the purpose set forth. (i. In alog barking machinethe combination ofan arm capable of rocking movement,

a cutter head, a carrier for said cutter head rotatabl mounted on saidarm so that said carrier s free to rock on said sun-the axis of rotationof said carrier onsaid arm extending transversely of the axis aboutwhich the arm can rock, feelers connected to said carrier at oppositesides ofthe cutter head, for contacting with the log and means forvertical adjustmentof one 0 said feelers.

' specification.

7. In a, log barkin machine the combination of an arm capab e of rockingmovement a cutter head, a carrier for said cutter hea rotatablymountedon said arm; the axisof I rotation of said carrier on said armextending transversely of the axis about which the arm can rock, feelersconnected to said carrier at opposite sides of the cutter head, ,forcontacting with the log, means for vertical adjustment of one of saidfeelers an'd means for axial adjustment of said cutter head in saidcarrier independently ofsaid feelers;

In witness whereof we :have signed this FRANZ mmmLsBAcH. HERMANNITORMIN.

